Flanged screw closure and method of making the same



Jan. 2, 1923. 1,440,987

C HAMMER. FLANGED SCREW CLOSURE AND METHOD OF MAKING THE SAME.

FILED JUNE 13, 192$.

HI LIII Illllllll.

Patented Jan. 2,

tdl ill i iil ji Lhttttii cnannns-naniann, or enemas, nnw Yon-n, assrerron to AMERICAN METAL car coirrnnr, or snooKLrn, new "roan, a CORPORATION on NEW YORK.

FLANGED SCREW CLOSURE AND METHOD O1 MAKING THE SAME.

Application filed June 13,

To all w ham it may concern:

Be it known that I, CHARLns HAMMER, a citizen of the United States, and a resident of Queens, in the county of Queens and State of New York, have invented certain new and useful Improvements in Flanged Screw Closures and Methods of Making the Same, of which the following is a specification.

This invention has reference to closures for containers, such as bottles and jars, especially those made of glass metal or other material having threads or inclined lugs at the outer side of the neck or top, and the closure is provided with projecting portions that will pass under such lugs when the closure is turned on the bottle, whereby it is securely locked by ascrewing action.

The object of the present invention is to provide a closure of this character that can be very simply and economically constructed, by simply cutting a blank in the form of a disk, then'by suitable means. as dies forming therefrom a cup-shaped blank; a cup shape, with the marginot' the skirt or flange formed at intervals with projections, and which projections may be formed in the disk before the cupping operation; and then deflecting the flange with its projections inwardly throughout its perimeter to extend toward the axis of the cylindrical skirt. and which preferably extends at an angle both to the axis and to the plane oi the top wall of the closure. i

In the accompanying drawing showing embodiments of my invention, Figure '1. shows the closure in position on a container.

Fig. 2 shows the closure in perspective.

Fig. 3 is a bottom plan view enlarged.

Fig. 4 is a section 011 the line H oi Fig. 3 and illustrating the closure before its application to a container;

. Fig. 5 is a similar view after the closure has been applied and removed.

Fig. 6 is a view similar to a of a modified construction. v

Fig. 7 indicates the flat disc-shaped blank, and

Fig. 8 showsthe cup shaped blank.

Heretofore, in this art, closures have been formed by providing projections or scallops on the margin of the skirt which projections are bent over in various forms to engage lugs or threads on the jar, but between these projectionsthe skirt extends as a cylinder 1921. Serial No. 477,134.

with a free raw edge. In other constructrons the margin between the projections is sometimes formed into a bead or doubled over against the cylindrical wall.

dfVit h the present invention the cylindrical skirt itself has its lower marginal portion inclined inwardly throughout the entire perimeter of the skirt to form an inturned rim or flange; and the margin of this inwardly extending flange is provided at intervals with projections that will extend toward the axis of the closure.

In the arrangement set forth in Figs. l 5, I. provide a closure comprising a flat top and having askirt 2 substantially cylindrical. The marginal portion of the skirt bent inwardly at 3 to form a kind of rim or flange that is annular and continuous. This flange is shown as inclined downward toward the axis of the closure and which angle is uniform throughout the rim in the cap as constructed.

This rim 3 is shown as provided with pro jecting portions 4: of which four are arranged at intervals. As shown these proections are substantially angular and have one side 5 of the angle comparatively short and abrupt, while the other side 6 is tapered, and is curved, but eccentric to the skirt curvature, as clearly shown in Fig. 3. This will permit the'upper end of each lug or projection 7 on the jar 8 to enter near the projection 4': at the abrupt end portion 5, upon turning the closure on the jar it will. pass under the container projection and serve to draw the closure down on the jar. This operation is assisted by the construction 0'! the projections that will yield be cause the cap is made of comparatively thin sheet metal and each projection will bend downwardly a comparatively short distance, as indicated in Figs. 1 and 5. But the adjacent portions. of the rim serve to strengthen the projecting portions and the closure is rigidly secured on the jar.

By turning the lower edge of the skirt inwardly to form an annular flange having the projections on its inner margin, the raw edge of such flange extends inwardly at a con sidera-ble angle so that the outer lower edge of the skirt is thus rounded and smooth, and consequently the hands of the user in applying or removing the closure or grasping the c mtainer by the top, do not come in contact with such raw edge and thus are protected.

Moreover the raw edge is to a certain extent protected from moisture so that rusting thereof is prevented.

The great advantage of a closure ofthis character is facility of construction. The flat disk simply brought into cup shape by a suitable die operation, and then by placing this member on a simple roll or disk, and causing engagement by another roll which are both rotated at high speed, the margin of the skirt willbe turned inwardly at the proper angle. he configuration oi the disk when blanked out, may have the projections already formed, that are retained in the cupping operation. And the said rolling or spinning portion. will simply turn inward the marginal portion containing these projections that will'be brought to the proper shape by simply spinning or rolling opera tion.

If desired, the skirt may be pressed inwardly at the lower portion adjacent the inclined rim-3, to form a bead 9, as shown in Figs. 4 and'5.- Between this bead and the top wall, the skirt maybe givencorrugations 10to reinforce and strengthen the closure and itsskirt.

In Fig. 6 a similar arrangement is shown, with the corrugations 12, extending the full height of'theskirt, the bead 9 being in this form omitted. With the use of the bead 9 as shown in Fig. 4%, that is extended inwardly, the portion of the. bead adjoining the inwardly extending rim 3 forms an outwardly' extending head that will greatly strengthen theicap at this portion.

As statedlwhen the cap is applied to a jar, the j-proj ecting portions will be slightly bent downwardly, but a very strong engagement on the jar is obtained. This closurecan be removed and replaced'ifdesired, as the projections will still engage the lugs on the jar.

What I claim is: I

1. A sheet metal screw closure for containers comprising a top and a skirt, said;

skirt having the lower margin thereof bent inwardly throughout its perimeter to term an. inwardly extending flange, said flal'lge having projections at intervals adapted to engage lugs or threads on the container.

2. A sheet metal screwv closure for containers comprising a top and a skirt, said skirt having the lower margin thereof bent inwardly throughout its perimeter to form an inwardly extending flange, said flange having. angularly formed projections at. intervals adapted to engage lugs or threads on the container.

3. A sheet met-a1 screw closure for containers comprising a top and a skirt, said skirt having the lower margin thereof bent inwardly throughout its perimeter to form an inwardly extending flange, said flange having. angularly formed projections at intervals with one side of the angle of greater length than the other side and adapted to engage lugs or threads on the container.

i. A sheet metal screw closure for con- ,tainers comprising a. top and a skirt, said skirt having thelower marginthereoi bent inwardly throughout its perimeter to form an inwardly extending flange, said flange having angularly formed projections at intervals, one side thereof being comparatively abrupt and the other side tapered and curved eccentric to the skirt curvature andfiadapted' to engage lugs or threads on the container.

5. A sheet metal. screw closure for containers comprising a top and a skirt,said skirt having the lower margin thereof bent inwardly throughout its perimeterto form an inwardly extending flange, said flange having projections at intervals adapted to engage projections on the container, said closure being :t'ormed'of yieldablethin metal whereby the projections can yield -to conform to the inclines of the projections of-the container. I v

6. A sheet metal screw closure for containers comprising a top and. a skirt, said skirt having the lower margin thereof bent inwardly throughout its perimeter to form an inwardly and downwardly extending flange. said flange having projections at intervals adapted to engage lugs or threads on the container.

71A sheet metal screw closure for containers, comprising a top and a skirt, said skirt having the lower margin; thereof bent inwardly throughout its perimeter to form an inwardly and downwardly extending flange, said flange having. angular projections at intervalsadapted toengageprojections on the container, said'closure projections having one side of the angle of greater length than the other. side, andsaid closure being formed o'f'yieldable thin metal whereby the projections can yieldto con form to the inclines of the projections of the container.

8. .A. sheet metal screw closure for containers, comprisingatopand askirt, said skirt having the lower margin thereof substantially uniformly bent throughout its perimeter to form an inwardly and downwardly extending flange, said flange having projections at intervals adapted to. engage lugs or threads on the container.

9. A sheet metal screw closure for containers comprising a top anda skirt, said skirt having the lower margin thereof bent inwardly throughout its perimeter to form an inwardly extending flange, said flange having projections at intervals adapted-to engage lugs or threads onthe container, and said skirt having a reinforcing bead above said flange. v

10. A sheet metal screw closure for containers comprising a top and a skirt. said skirt having the lower margin thereof bent inwardly throughout its perimeter to form an inwardly extending flange, said flange having projections at intervals adapted to engage lugs or threads on the container, and said skirt having reinforcing corrugations and an inwardly extending bead between said corrugations and the flange.

11. A sheet metal screw closure for containers comprising a top and a skirt, said skirt having the lower margin thereof bent inwardly throughout its perimeter to form an inwardly and downwardly extending flange, said flange having angular projections at intervals, one side thereof being comparatively abrupt and the other side tapered and curved eccentric to the skirt curvature and adapted to engage projections on the container, said closure being formed of yieldable thin metal whereby the projections can yield to conform to the inclines of the projections of the container, and said skirt having a series of reinforcing corrugations and a reinforcing head between said corrugations and the flange.

12. The method of making a seet metal screw closure for containers which consists in forming from a disc of metal a cup shaped blank comprising a top and a skirt, then bending the lower portion of the skirt inwardly to form an inwardly extending continuous flange, and providing, during the formation of the closure, the inner margin of said inwardly extending flange at intervals wit-l1 locking projections.

13. The method of making a sheet metal screw closure for containers which consists in forming from a disc of metal a cup shaped blank comprising a top and a skirt, then bending the lower portion of the skirt inwardly to form an inwardly extending continuous flange, and providing, during the formation of the closure the inner margin of said inwardly extending flange at intervals, with looking projections, and also providing said skirt with reinforcing corrugations and a reinforcing bead between the corrugations and said flange.

14:. The method of making a sheet metal closure for containers which consists in providing a disc of metal with a series of projections along its margin, then forming said metal disc into a cup-shaped blank having a top and a skirt, then bending the lower portion of the skirt inwardly throughout its perimeter to form an inclined flange with said projections along the margin thereof. Signed at New York city, N. Y., on June 10, 1921.

CHARLES HAMMER. 

